Libby \l(ib)-by\ as a girl's name is pronounced LIB-ee. It is of English origin. Diminutive of Elizabeth (Hebrew) "God's promise".
Libby has 8 variant forms: Lib, Libbee, Libbey, Libbie, Libet, Liby, Lilibet and Lilibeth.
Baby names that sound like Libby are Libbye and Libbi.